RD Sharma Class 10 Chapter 12 (Some Applications of Trigonometry) SolutionsShare
Trigonometry finds its applications in astronomy, construction of maps, and navigation. There are three important terminologies of RD Sharma Class 10 Chapter-12, which are the line of sight, the angle of elevation, and the angle of depression.
As you have already studied the topic ‘trigonometric ratios’ in Chapter-5, you can find out the distance between two distant objects using these ratios. Alternatively, you can also find out the length or height of an object.
With a total of 72 questions present in the first exercise itself, you can entirely depend on RD Sharma Solutions for strengthening all your concepts.
RD Sharma Class 10 Chapter 12 (Some Applications of Trigonometry) Solutions
A vertical tower stands on a horizontal plane and is surmounted by a vertical flag-staff. At a point on the plane 70 metres away from the tower, an observer notices that the angles of elevation of the top and the bottom of the flag-staff are respectively 60° and 45°. Find the height of the flag-staff and that of the tower.
|Chapter 1 - Real Numbers|
|Chapter 2 - Polynomials|
|Chapter 3 - Pair of Linear Equations in Two Variables|
|Chapter 4 - Triangles|
|Chapter 5 - Trigonometric Ratios|
|Chapter 6 - Trigonometric Identities|
|Chapter 7 - Statistics|
|Chapter 8 - Quadratic Equations|
|Chapter 9 - Arithmetic Progressions|
|Chapter 10 - Circles|
|Chapter 11 - Constructions|
|Chapter 12 - Some Application of Trigonometry|
|Chapter 13 - Probability|
|Chapter 14 - Co-ordinate Geometry|
|Chapter 15 - Areas Related to Circles|
|Chapter 16 - Surface Areas and Volumes|
Important Terminologies of Applications of Trigonometry Class 10 | RD Sharma
- Line of Sight: Line drawn between the eye of an observer to the point in the object viewed by the observer.
- Angle of Elevation: The angle formed between the line of sight and the horizontal when the point under consideration is above the horizontal level.
- Angle of Depression: The angle formed between the line of sight and the horizontal when the point under consideration is below the horizontal level.
Concepts in RD Sharma Class 10 Chapter-12
To solve a particular question, you will first assess the given values such as the angle of elevation or angle of depression or distance between the object and the observer.
RD Sharma Class 10 Chapter-12 consists of the following topics.
- Heights and Distances
- Line of Sight
- Angle of Elevation
- Angle of Depression